#include <57header.h>

int num = 0;

void *func(void *p){

    for(int i=0; i<10000000; i++){
        num++;
    }

    return NULL;
}
int main(int argc,char*argv[])
{
    pthread_t son_id;
    pthread_create(&son_id, NULL, func, NULL);

    for(int i=0; i<10000000; i++){
        num++;
    }

    pthread_join(son_id, NULL);
    printf("num: %d \n", num);
    return 0;
}

